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H9ADCSSPGDCLOUDNCI12011 » Forums » Class Forum » Eloquent JavaScript

Eloquent JavaScript by Michael Bradford - Wednesday, 26 October 2011, 01:00 PM

Hi Everybody, Please see http://eloquentjavascript.net/. There is a freely available book online at this site that allows readers to manipulate and run code examples as they progress through the material. The book also covers programming concepts in general (such as Object Oriented Programming). The book is called Eloquent JavaScript A Modern Introduction to Programming by Marijn Haverbeke   Regards, Michael. Reply See this post in context

Getting Heroku Working

This comes strait from my inbox from Desmond Harrold


Heroku Does work !!



"You need explicitly to generate a Public/Private key pair and add them to Heroku and then the git push command works. The keys are not automatically uploaded the first time you use Heroku.


The key generation is in a document on the Heroku site."


If anyone has questions... dont ask me... ask Desmond Harrold

Table of Contents

• Adding Keys to Heroku

If you don’t already use SSH, you’ll need to create a public/private key pair to deploy code to Heroku. This keypair is used for the strong cryptography and that uniquely identifies you as a developer when pushing code changes.

You can use DSA keys if you prefer, using the -t dsa option. Heroku can use either type of key.

To generate a public key:

$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/adam/.ssh/id_rsa):
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /Users/adam/.ssh/id_rsa.
Your public key has been saved in /Users/adam/.ssh/id_rsa.pub.
The key fingerprint is:
a6:88:0a:0b:74:90:c6:e9:d5:49:d6:e3:04:d5:6c:3e adam@workstation.local

Press enter at the first prompt to use the default file location. You may wish to provide a password for the key, although this is not necessary - if your workstation is physically secure and is not used by anyone other than you, pressing enter at both prompts to make a passwordless key is secure. As long as you keep the contents of ~/.ssh/id_rsa secret, your key will be secure even without a password.

Further Reading

http://sial.org/howto/openssh/publickey-auth/

Adding Keys to Heroku

The first time you run the heroku command, you’ll be prompted for your credentials. Your public key will then be automatically uploaded to Heroku. This will allow you to deploy code to all of your apps.
If you wish to add other keys, use this command:

$ heroku keys:add
Uploading ssh public key /Users/adam/.ssh/id_rsa.pub

Without an argument, it will look for the key in the default place (~/.ssh/id_rsa.pub or ~/.ssh/id_dsa.pub). If you wish to use an alternate key file, specify it as an argument. Be certain you specify the public part of the key (the file ending in .pub). The private part of the key should never be transmitted to any third party, ever.
Revoke old keys you’re no longer using or that you think might be compromised (for example, if your workstation is lost or stolen):

$ heroku keys:remove adam@workstation.local
Key adam@workstation.local removed.

The ASCII-armored key data is shortened for readability. If you wish to see the full public key, use the --long argument. You will probably want to redirect this to a file (heroku keys --long > keys.txt), since it will be easier to look at in a text editor.

The key name the user@workstation bit that appears at the end of the key line in your public key file. You can see a list of all keys, including the key’s name, like this:

$ heroku keys
=== 1 key for joe@example.com 

ssh-dss AAAAB8NzaC...DVj3R4Ww== joe@workstation.local"

Ruby on Rails Projects

From the other night, there were people talking about the fact they had problems coming up with suitable project Ideas

bellow is a link that might help

http://www.webresourcesdepot.com/23-amazing-and-open-source-ruby-on-rails-applications/

some ideas could be as simple as , parsing data from a website into another format? such as from an accessibly Idea... take an news based website, remove all the images and display the text in another format...

Accessibly is Key... in this modern internet age... just take a look at any of the WCAG (Web accessibly guidlines) as set out by the W3C and it will show you...

I have a few other ideas... that I would like to do...so If any one wants me to help them put an idea together then... I'm more then willing to help.

Laters

N

Class Rep Survey Monkey

Morning All,

Ken Poland, has kindly created this Survey to help us choose a class rep...

At the moment there are 2 contenders... Myself and Barron O'Rouke

Class Rep Survey

N.

LinkedIn

Hi All,

Mark Donnelly has Set up a LinkedIn group for us to use

http://www.linkedin.com/groups/Hi-Welcome-Just-thought-I-4115259.S.73790271?goback=%2Egmp_4115259

N.

Stuff

Don't know really what to say here,

We are starting our third week

What have we learnt so far ...

1. Heroku  JUST DOESN'T WORK... no matter what people tell you...
2. We need to download and install a C# Compiler... Dream-spark was recommended...I have copys of Visual Studio Pro 2010 if people want it of me...
3. Timetabling in NCI is a Joke.
4. Java-scripting is not going to die any time soon...
5. We have a lab on Saturday

See you all on Wedensday

N.

Class Rep

I would like to through my hat into the ring... although little has been done about it from NCI's point of view.

All in favour say Aye..

N.